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    • 6. 发明公开
    • 선압축변형을 이용하여 저주기 피로 수명이 향상된 마그네슘 합금 가공재의 제조방법
    • 使用预应变制造具有改进的低周期疲劳寿命的镁合金的方法
    • KR1020110007810A
    • 2011-01-25
    • KR1020090065438
    • 2009-07-17
    • 포항공과대학교 산학협력단
    • 박성혁이종수홍성구이병호
    • C22F1/06
    • C22F1/06
    • PURPOSE: A method for manufacturing magnesium alloy worked material having improved low-cycle fatigue life using pre-straining is provided to improve the stability of components and enlarge the application area of magnesium alloy worked material by the improvement of fatigue characteristic. CONSTITUTION: A method for manufacturing magnesium alloy worked material having improved low-cycle fatigue life using pre-straining comprises following steps. A pre-straining process is performed in magnesium alloy worked material. Twin crystals are created on the magnesium alloy worked material. The pre-straining process is performed at the deformation ratio 1~15%. The low cycle fatigue life is improved since the pre-straining process is performed.
    • 目的:提供一种通过预应变制造具有改善的低周疲劳寿命的镁合金加工材料的方法,以通过改善疲劳特性来提高部件的稳定性并扩大镁合金加工材料的应用面积。 构成:使用预应变来制造具有改善的低周疲劳寿命的镁合金加工材料的方法包括以下步骤。 在镁合金加工材料中进行预应变过程。 在镁合金加工材料上形成双晶。 预应变过程以1〜15%的变形率进行。 自从进行预应变过程以来,低循环疲劳寿命得到改善。